CVE-2026-0768 PoC — Langflow code Code Injection Remote Code Execution Vulnerability

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-0768.yaml

Associated Vulnerability

Title: Langflow code Code Injection Remote Code Execution Vulnerability (CVE-2026-0768)
Description:Langflow code Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the code parameter provided to the validate endpoint. The issue results from the lack of proper validation of a user-supplied string before using it to execute Python code. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-27322.

Description

Langflow <= 1.2.x exposes POST /api/v1/validate/code without any authentication. The endpoint calls validate_code() which exec()s user-supplied Python code. Default-argument expressions in Python execute at function-definition time, allowing arbitrary OS command execution without authentication.

File Snapshot

Remarks

1. It is advised to access via the original source first.

2. Local POC snapshots are reserved for subscribers — if the original source is unavailable, the local mirror is part of the paid plan.

View subscription plans →